virtio-blk: Fix memory leak among suspend/resume procedure

[ Upstream commit b71ba22e7c6c6b279c66f53ee7818709774efa1f ]

The vblk->vqs should be freed before we call init_vqs()
in virtblk_restore().

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210517084332.280-1-xieyongji@bytedance.com
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index e57a1f6e39d5cb5482406c1a916395264ece90f4..302260e9002c770f182d96223b38b8c9f3579f78 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -800,6 +800,8 @@ static int virtblk_freeze(struct virtio_device *vdev)
        blk_mq_stop_hw_queues(vblk->disk->queue);
 
        vdev->config->del_vqs(vdev);
+       kfree(vblk->vqs);
+
        return 0;
 }